Can you please explain further about the difference of pneumothorax and hemothorax in terms with the tracheal and mediastinal shift?

In summary, disorders of the pleura include hemothorax and pneumothorax (others include pleural effusion and pleuritis).

Pain is a common symptom of conditions that produce pleuritis or inflammation of the pleura. Characteristically, the pain is unilateral, abrupt in onset and exaggerated by respiratory movements.

Hemothorax refers to the presence of blood in the pleural cavity. Pneumothorax refers to an accumulation of air in the pleural cavity that causes partial or complete collapse of the lung.

Pneumothorax can result from the rupture of an air-filled bleb on the lung surface or from penetrating or non-penetrating injuries.

A tension pneumothorax is a life-threatening event in which air progressively accumulates in the thorax, collapsing the lung on the injured side and progressively shifting the mediastinum to the opposite side of the thorax, producing severe cardiac and respiratory impairment.

Ref; Pooler C. et al. Porth Pathophysiology: Concepts of Altered Health States. 2009. Lippincott Williams and Wilkins. Chapter 29. Disorders of Ventilation and Gas Exchange. Unit VII Disorders of Respiratory Function. Pg 680.